55513016789 has 2 divisors, whose sum is σ = 55513016790. Its totient is φ = 55513016788.

The previous prime is 55513016759. The next prime is 55513016791. The reversal of 55513016789 is 98761031555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52781386564 + 2731630225 = 229742^2 + 52265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55513016789 is a prime.

Together with 55513016791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55513016759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27756508394 + 27756508395.

It is an arithmetic number, because the mean of its divisors is an integer number (27756508395).

Almost surely, 2^55513016789 is an apocalyptic number.

It is an amenable number.

55513016789 is a deficient number, since it is larger than the sum of its proper divisors (1).

55513016789 is an equidigital number, since it uses as much as digits as its factorization.

55513016789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134000, while the sum is 50.

The spelling of 55513016789 in words is "fifty-five billion, five hundred thirteen million, sixteen thousand, seven hundred eighty-nine".